package iohomework_2;

import java.io.*;

public class CopyDemo3BUffered {
    public static void main(String[] args) throws IOException {
        FileInputStream fis=new FileInputStream("gou.jpg");
        BufferedInputStream bis=new BufferedInputStream(fis);
        FileOutputStream fos=new FileOutputStream("gou_new2.jpg");
        BufferedOutputStream bos=new BufferedOutputStream(fos);
        int d;
        long start = System.currentTimeMillis();
        while((d=bis.read())!=-1){
            bos.write(d);
        }
        long end =System.currentTimeMillis();
        System.out.println("复制完毕！用时："+(end-start)+"ms");

        bis.close();
        bos.close();
    }
}
